%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture répertoriées par l'AERES
%A Perrine Walker, Francine
%A Doumas, Patrick
%A Lucas, Mikaël
%A Vaissayre, Virginie
%A Beauchemin, Nicolas
%A Band, L. R.
%A Chopard, J.
%A Crabos, Amandine
%A Conejero, G.
%A Peret, Benjamin
%A King, J. R.
%A Verdeil, J. L.
%A Hocher, Valérie
%A Franche, Claudine
%A Bennett, M. J.
%A Tisa, L. S.
%A Laplaze, Laurent
%T Auxin carriers localization drives auxin accumulation in plant cells infected by Frankia in Casuarina glauca actinorhizal nodules
%D 2010
%L fdi:010052911
%G ENG
%J Plant Physiology
%@ 0032-0889
%M ISI:000283710300030
%N 3
%P 1372-1380
%R 10.1104/pp.110.163394
%U https://www.documentation.ird.fr/hor/fdi:010052911
%> https://www.documentation.ird.fr/intranet/publi/2010/11/010052911.pdf
%V 154
%W Horizon (IRD)
%X Actinorhizal symbioses are mutualistic interactions between plants and the soil bacteria Frankia that lead to the formation of nitrogen-fixing root nodules. Little is known about the signaling mechanisms controlling the different steps of the establishment of the symbiosis. The plant hormone auxin has been suggested to play a role. Here we report that auxin accumulates within Frankia-infected cells in actinorhizal nodules of Casuarina glauca. Using a combination of computational modeling and experimental approaches, we establish that this localized auxin accumulation is driven by the cell-specific expression of auxin transporters and by Frankia auxin biosynthesis in planta. Our results indicate that the plant actively restricts auxin accumulation to Frankia-infected cells during the symbiotic interaction.
%$ 076 ; 084